Method of manufacture of a lens with gradient properties using imbibition technology
US11673355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2016 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Aug 21, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/105
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing an optical article includes applying an imbibition composition having at least one dye onto at least a portion of at least one imbibable surface (45) of a substrate (20) to form a coated substrate (10). The method further includes irradiating at least a portion of the coated substrate with heat from a heat source (80) to form a heat gradient across the coated substrate (10) to diffuse the at least one dye into the imbibable surface to form an at least partially imbibed substrate having a dye concentration gradient corresponding to the heat gradient. The method further includes removing a residual component of the imbibition composition from the at least partially imbibed substrate. The dye concentration gradient forms a gradient pattern upon exposure to actinic radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.